Merge pull request #455 from wjun94/dev

[!] wxc-radio組件修改list array時無法修改期選中項
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 308e3f0..cea6e66 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,7 @@
 ## 0.6.15
 - [!] [wxc-swipe-action](https://alibaba.github.io/weex-ui/#/cn/packages/wxc-swipe-action/)fix delete the last data item, then click on another item to report the error.
 - [!] [wxc-slider-bar](https://alibaba.github.io/weex-ui/#/cn/packages/wxc-slider-bar/) fix dynamically assign value to value, then slide back to return value
+- [!] [wxc-radio](https://alibaba.github.io/weex-ui/#/cn/packages/wxc-radio/) fix the selected item cannot be modified when modifying the list array
 
 ## 0.6.14
 - [!] [wxc-swipe-action](https://alibaba.github.io/weex-ui/#/cn/packages/wxc-swipe-action/) adds slot labels, extended style and height attributes
diff --git a/CHANGELOG_cn.md b/CHANGELOG_cn.md
index 4a243fb..a52ceea 100644
--- a/CHANGELOG_cn.md
+++ b/CHANGELOG_cn.md
@@ -2,7 +2,8 @@
 
 ## 0.6.15
 - [!] 解决[wxc-swipe-action](https://alibaba.github.io/weex-ui/#/cn/packages/wxc-swipe-action/)删除最后一个数据项,再点击其他项动画报错
-- [!] wxc-slider-bar组件 动态给value赋值后,再滑动返回值错乱
+- [!] [wxc-slider-bar](https://alibaba.github.io/weex-ui/#/cn/packages/wxc-slider-bar/)组件 动态给value赋值后,再滑动返回值错乱
+- [!] [wxc-radio](https://alibaba.github.io/weex-ui/#/cn/packages/wxc-radio/)组件修改list array时无法修改选中项
 
 ## 0.6.14
 - [!] [wxc-swipe-action](https://alibaba.github.io/weex-ui/#/cn/packages/wxc-swipe-action/)添加slot标签,扩展styles和height属性
diff --git a/packages/wxc-radio/index.vue b/packages/wxc-radio/index.vue
index 34e2238..5e69dd2 100644
--- a/packages/wxc-radio/index.vue
+++ b/packages/wxc-radio/index.vue
@@ -46,7 +46,13 @@
       }
     },
     watch: {
-      list (newList) {
+      list (newList, oldList) {
+        if (JSON.stringify(newList) !== JSON.stringify(oldList.map(v => {
+          const {title, value} = v
+          return {title, value}
+        }))) {
+          this.checkedIndex = -1
+        }
         this.setListChecked(newList);
       }
     },